[Hiring] Senior Systems Engineer @ARC Group

Role Description

As a Senior Systems Engineer, you will be responsible for the design, administration, monitoring, troubleshooting, and optimization of enterprise application delivery infrastructure. You will serve as a technical leader supporting Citrix NetScaler ADC, Fortinet FortiProxy, Microsoft IIS, cloud migrations, and automation initiatives while ensuring high availability, security, and performance across the enterprise.

• Administer and support enterprise Citrix NetScaler ADC environments.
• Configure and troubleshoot Layer 4 and Layer 7 load balancing.
• Perform PCAP analysis and advanced network troubleshooting.
• Manage enterprise reverse proxy infrastructure supporting public-facing applications.
• Lead hardware refreshes, migrations, and infrastructure modernization projects.
• Support AWS cloud migration initiatives from an application delivery and load balancing perspective.
• Administer Fortinet FortiProxy or similar proxy technologies, including firmware upgrades and patch management.
• Support and maintain Microsoft IIS web server environments.
• Manage SSL certificates and application security.
• Develop automation using PowerShell and other scripting languages.
• Monitor system performance, troubleshoot complex issues, and implement proactive improvements.
• Collaborate with infrastructure, networking, security, and application teams.
• Participate in disaster recovery planning and 24x7 on-call support as needed.
• Ensure enterprise environments remain secure, compliant, and aligned with architectural standards.

Qualifications

• 7+ years administering Citrix NetScaler ADC, including:
• Layer 4/Layer 7 routing
• PCAP analysis
• Hardware refreshes
• Infrastructure migrations
• 3+ years supporting cloud migrations or cloud transformation initiatives (AWS preferred).
• 3+ years administering Fortinet FortiProxy or similar proxy platforms, including firmware upgrades and patching.
• 3+ years managing SSL certificates.
• Experience supporting Microsoft IIS web servers.
• Strong experience working in both Windows and Linux environments.
• Experience supporting vulnerability management and audit remediation.
• Strong scripting experience using PowerShell; Java, Python, or PHP experience is a plus.
• Experience implementing and supporting enterprise-scale application delivery infrastructure.
• Ability to participate in a 24x7 on-call rotation.
• Must be a U.S. Citizen or Green Card holder to qualify.

Preferred Qualifications

• Healthcare or other large enterprise environment experience.
• AWS Application Load Balancer (ALB) or cloud-native load balancing experience.
• Experience with enterprise automation and infrastructure modernization initiatives.
• Excellent troubleshooting, communication, and technical leadership skills.

Benefits

• Join one of the nation's leading healthcare organizations.
• Work on large-scale enterprise infrastructure supporting mission-critical applications.
• Be part of cloud transformation and modernization initiatives.
• Long-term contract with strong potential for extension.
• Hybrid work environment offering flexibility and collaboration.
• Opportunity to work alongside highly experienced infrastructure engineering teams.